<template>
  <i v-if="isShowIconSvg" class="el-icon" :style="setIconSvgStyle">
    <component :is="getIconName" />
  </i>
  <div v-else-if="isShowIconImg" :style="setIconImgOutStyle">
    <img :src="getIconName" :style="setIconSvgInsStyle" />
  </div>
  <i v-else :class="getIconName" :style="setIconSvgStyle" />
</template>

<script lang="ts">
import { computed, defineComponent } from "vue";

export default defineComponent({
  name: "svgIcon",
  props: {
    // svg 图标组件名字
    name: {
      type: String,
    },
    // svg 大小
    size: {
      type: Number,
      default: () => 14,
    },
    // svg 颜色
    color: {
      type: String,
    },
  },
  setup(props) {
    // 在线链接、本地引入地址前缀
    const linesString = ["https", "http", "/src", "/assets"];

    // 获取 icon 图标名称
    const getIconName = computed(() => {
      return props?.name;
    });
    // 用于判断 element plus 自带 svg 图标的显示、隐藏
    const isShowIconSvg = computed(() => {
      return props?.name?.startsWith("ele-");
    });
    // 用于判断在线链接、本地引入等图标显示、隐藏
    const isShowIconImg = computed(() => {
      return linesString.find((str) => props.name?.startsWith(str));
    });
    // 设置图标样式
    const setIconSvgStyle = computed(() => {
      return `font-size: ${props.size}px;color: ${props.color};`;
    });
    // 设置图片样式
    const setIconImgOutStyle = computed(() => {
      return `width: ${props.size}px;height: ${props.size}px;display: inline-block;overflow: hidden;`;
    });
    // 设置图片样式
    // https://gitee.com/lyt-top/vue-next-admin/issues/I59ND0
    const setIconSvgInsStyle = computed(() => {
      const filterStyle: string[] = [];
      const compatibles: string[] = ["-webkit", "-ms", "-o", "-moz"];
      compatibles.forEach((j) =>
        filterStyle.push(`${j}-filter: drop-shadow(${props.color} 30px 0);`)
      );
      return `width: ${props.size}px;height: ${
        props.size
      }px;position: relative;left: -${props.size}px;${filterStyle.join("")}`;
    });
    return {
      getIconName,
      isShowIconSvg,
      isShowIconImg,
      setIconSvgStyle,
      setIconImgOutStyle,
      setIconSvgInsStyle,
    };
  },
});
</script>
